Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Roy Michael Mass, DC

Individual provider Chiropractor · NPI 1295812253

Dr. Roy Michael Mass, DC is a Chiropractor in Ontario, Oregon. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

2075 Sunset Dr
Ontario, OR 97914-4148
Phone: (541) 889-4197
Fax: (541) 889-4197
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence 11336 (CA)

Record details

NPI number1295812253
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorYes
NPI enumeratedNovember 1, 2006
Last updated in NPPESJuly 8, 2007
Mailing address2075 Sunset Dr, Ontario, OR 97914-4148

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